Max.... dexriptors only give errors of string type "max() arg is an empty sequence (MAXssS)"

[DocMinus]

Even though it seems this isn't supported anymore (what a shame) I'll still file this:

description
All of the descriptors starting with Max..... give error messages of the type "max() arg is an empty sequence (MAX....)"

minimal reproduction code
any mordred descriptor calculation ever encountered by me (e.g. code examples given here on git), with and without 3d coordinates

environment
Linux Ubuntu 18 or 20
Windows 10
conda
Python 3.8.x
rdkit version 2021.03.1